#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <unistd.h>


int main()
{
    fprintf(stdout,"C:hello fprintf\n");
    printf("C:hello printf\n");
    fputs("C:hello fputs\n", stdout);

    const char *str = "system call: hello write\n";
    write(1, str, strlen(str));
    fork();
    return 0;
}
